The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 1983
Filed:
Dec. 18, 1981
Applicant:
Inventors:
Tsuyoshi Mitarai, Yokohama, JP;
Takeshi Yamaguchi, Kodaira, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10H / ; G10H / ; G10H / ;
U.S. Cl.
CPC ...
84-119 ; 84-126 ; 84-127 ; 381 31 ;
Abstract
A tone signal having been data compressed or expanded is obtained through a circuit for taking the sum of upper three bits of envelope data, a latch for storing the output of said circuit, a circuit for setting the extent of bit shift of digital tone data according to the output of said latch, a latch group for latching the tone data having been bit shifted according to the output of the setting circuit, and an amplifier, the amplification level of which is set according to the extent of bit shift and which receives and amplifies the bit shifted tone data from a digital-to-analog converter.